[논문]Facile Synthesis of MoS2-C60 Nanocomposites and Their Application to Catalytic Reduction and Photocatalytic Degradation

Li, Jiulong; Ko, Weon Bae

doi:10.7473/ec.2016.51.4.286

Facile Synthesis of MoS2-C60 Nanocomposites and Their Application to Catalytic Reduction and Photocatalytic Degradation 원문보기

Elastomers and composites = 엘라스토머 및 콤포지트, v.51 no.4, 2016년, pp.286 - 300

Li, Jiulong (Department of Convergence Science, Graduate School, Sahmyook University) , Ko, Weon Bae (Department of Convergence Science, Graduate School, Sahmyook University)

Abstract ▼ AI-Helper

$MoS_2$ precursors were synthesized by reacting thioacetamide ($C_2H_5NS$) with sodium molybdate dihydrate ($Na_2MoO_4{\cdot}2H_2O$) in aqueous HCl solution. $MoS_2$ nanoparticles were prepared from dried $MoS_2$ precursors by calcination in an electric furnace at $700^{\circ}C$ for 2 h under an inert argon atmosphere. $MoS_2-C_{60}$ nanocomposites were obtained by heating $MoS_2$ nanoparticles and fullerene ($C_{60}$) together in an electric furnace at $700^{\circ}C$ for 2 h. Their morphological and the structural properties were characterized by powder X-ray diffraction and scanning electron microscopy. The $MoS_2$ nanoparticles and $MoS_2-C_{60}$ nanocomposites were used as catalysts in the reductions of 2-, 3-, and 4-nitrophenol in the presence of sodium borohydride. The photocatalytic activities of the $MoS_2$ nanoparticles and $MoS_2-C_{60}$ nanocomposites were evaluated in the degradation of organic dyes (brilliant green, methylene blue, methyl orange, and rhodamine B) under ultraviolet light (254 nm).

주제어

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제안 방법

In order to test the photocatalytic activities of the synthesized samples, solutions of organic dyes, BG, MB, MO, and RhB, were prepared and their degradation was performed using MoS₂ nanoparticles and MoS₂-C₆₀ nanocomposites as photocatalysts under UV lamp irradiation at 254 nm. Before UV irradiation, the reactor was kept in a dark environment for 30 min to achieve an adsorption-desorption equilibrium for the organic dyes.
A UV lamp at 254 nm was used to provide UV light, with a distance of 1 cm between the lamp and reactor. The photocatalytic degradation of the organic dyes was analyzed by UV Vis spectrophotometry, monitoring every 10 min when using MoS₂ nanoparticles as photocatalysts, and 5 min intervals when using MoS₂-C₆₀ nanocomposites as photocatalysts.

대상 데이터

3-Nitrophenol was supplied by Tae Jin Chemical. BG and MO were purchased from Sigma-Aldrich (China). MB·3H₂O, RhB, and tetrahydrofuran (THF) were obtained from Samchun Chemicals (Korea).
The catalytic reduction of nitrophenols was monitored every 20 min using a UV-Vis spectrophotometer. The catalysts were MoS₂ nanoparticles and MoS₂-C₆₀ nanocomposites.

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